Major changes for release 2.0b1

• Support for versioning in S3
• Support for MFA Delete in S3
• Support for Elastic Map Reduce
• Support for Simple Notification Service
• Support for Google Storage
• Support for Consistent Reads and Conditional Puts in SimpleDB
• Significant updates and improvements to Mechanical Turk (mturk) module
• Support for Windows Bundle Tasks in EC2
• Support for Reduced Redundancy Storage (RRS) in S3
• Support for Cluster Computing instances and Placement Groups in EC2